Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Provision for income taxes	$ 49,000	$ 0
Unrecognized tax benefits	0	0
Accrual for interest or penalties	0	0
Recognized interest and penalties	0	$ 0
Domestic Tax Authority
Income Tax Disclosure [Line Items]
Income tax net operating loss carryforwards	327,200,000
Domestic Tax Authority | Research Tax Credit Carryforward
Income Tax Disclosure [Line Items]
California research and development tax credit carryforwards	10,800,000
Domestic Tax Authority | Expiring 2026
Income Tax Disclosure [Line Items]
Income tax net operating loss carryforwards	158,700,000
California research and development tax credit carryforwards	10,800,000
Domestic Tax Authority | Carryforward Indefinitely
Income Tax Disclosure [Line Items]
Income tax net operating loss carryforwards	168,500,000
State and Local Jurisdiction
Income Tax Disclosure [Line Items]
Income tax net operating loss carryforwards	245,100,000
State and Local Jurisdiction | Research Tax Credit Carryforward
Income Tax Disclosure [Line Items]
California research and development tax credit carryforwards	16,700,000
State and Local Jurisdiction | Expiring 2026
Income Tax Disclosure [Line Items]
Income tax net operating loss carryforwards	210,600,000
State and Local Jurisdiction | Carryforward Indefinitely
Income Tax Disclosure [Line Items]
Income tax net operating loss carryforwards	34,500,000
California research and development tax credit carryforwards	$ 16,700,000